Deoderants are cosmetics formulated to mask body odor, to make the skin smell better. They commonly contain odor-masking fragrance. They can be formulated as aerosols and sprays, pumps, roll-ons, solid sticks, gels and creams. Deoderants do not prevent sweating. Antiperspirants are over-the-counter drugs, regulated by the US Food and Drug Administration (FDA). They are usually formulated with aluminum-based compounds with the intent on preventing sweat from reaching the skin surface by creating a temporary plug within the sweat duct. All sweat is odorless until it combines with bacteria found on the skin surface. By preventing perspiration, antiperspirants are also deoderants.